Count Widgets/Items in ScollArea.

hjohn

I want to count how many items are not in viewport when listed with QScrollarea.
Here in Image button 0 and button 1 are hide(not in viewport).I want to count widegets/items not in viewport

Code :

#include "widget.h"
#include "ui_widget.h"

#include<QScrollArea>
#include<QPushButton>
#include<QDebug>
Widget::Widget(QWidget *parent) :
    QWidget(parent),
    ui(new Ui::Widget)
{
    ui->setupUi(this);
  
    QWidget *W=new QWidget(this);

    W->setMaximumWidth(700);
    W->setLayout(ui->verticalLayout);

    for(int i=0;i<20;i++){
        QPushButton *button=new QPushButton;

        ui->verticalLayout->addWidget(button);
        button->setText("buttonOntheLayout"+QString::number(i));
    }

    QScrollArea *area=new QScrollArea(this);
    area->resize(140,400);
    area->setWidget(W);
}

Widget::~Widget()
{
    delete ui;
}

hjohn

Can Anyone Help me!!Its high priority Task for me..

VRonin

It's a user forum, you can't expect answers in real time. Have a look at the docs.
My first guess would be to use scrollArea->viewport()->visibleRegion(), iterate over all the child widgets and see if their geometry is inside that region

hjohn

@VRonin yeah Thanks..I will look at it..